Sumitomo Chemical Company, Limited

Masaya Hashizume

Noriyasu Sakamoto

Hayato Takyo

Mitsuru Sasaki

Norio Kimura

Noboru Yamamoto

Hayato 8-7-20 Hon-Machi Takyo

Noriyasu 4-1-4 Kitasakurazuka Sakamoto

The present invention provides a pyrazole compound of formula (a): a noxious arthropod pests controlling composition containing the compound shown by the formula (a) as an active ingredient; and a method for controlling noxious arthropod pests comprising applying an effective amount of the compound shown by the formula (a). 

Pyrazole compounds and use thereof

A pyrazole compound of formula (a): wherein Rrepresents C1-C4 alkyl or trifluoromethyl, Rrepresents C1-C4 alkyl, Rrepresents hydrogen or C1-C6 alkyl; Rrepresents halogen and so on, m represents 0 to 4 integer; Rrepresents halogen and so on, n represents 0 to 4 integer; Rand Rare same or different and represents hydrogen, halogen or methyl; X represents oxygen or RO&#x2014;N; Rrepresents hydrogen, C1-C6 alkyl and the like;has an excellent controlling activity against noxious arthropods.

Pyrazole compound

The pyrazolinone derivatives represented by the formula &lsqb;I&rsqb;:

Pyrazolinone derivatives

A method for producing a pyrazolinone compound represented by the formula (I): ##STR1## (wherein, R.sup.1 is a hydrocarbyl group which may be substituted, R.sup.2 is a hydrocarbyl group which may be substituted and Ar is a phenyl group which may be substituted) which comprises reacting a lithium salt of a pyrazolinone compound represented by the formula (II): ##STR2## (wherein, R.sup.1 and Ar have the same meanings as described above) is reacted with a sulfonic acid ester represented by the formula (III):

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Yokohama, Japan

Masaya Hashizume